#计算BMI指数
height = 1.75
weight = 80.5

bmi = weight / height / height

print (bmi)

if bmi < 18.5:
    print ('过轻')
elif bmi >= 18.5 and bmi < 25:
    print ('正常')
elif bmi >= 25 and bmi < 28:
    print ('过重')
elif bmi >= 28 and bmi < 32:
    print ('肥胖')
else:
    print ('严重肥胖')